t1_2007_spring_no_answers

t1_2007_spring_no_answers - Find the acceleration of block...

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MIME 2300 Test 1 Name _______________________ Section ______ February 16, 2007 In all the problems show all equations used with variables and then with values substituted so partial credit can be given wherever possible. Give units on all answer. On problems where appropriate, draw coordinate systems, datums, FBDs, K.Ds or velocity diagrams. 1. In practice, the quarterback throws the football with velocity v 0 at 45° above the horizontal. At the same instant, the receiver standing 20 ft in front of him starts running straight downfield at 10 ft/s and catches the ball. Assume that the ball is thrown and caught at the same height above the ground. What is the velocity v 0 ? (28 points) Page 1 of 4 1 __________/28 2 __________/36 3 __________/8 4 __________/28 Total ______/100
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2. Initially block A with a weight of 20 lbs and block B with a weight of 10 pounds are held motionless on the incline plane shown and force P is applied. The blocks are then released.
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Unformatted text preview: Find the acceleration of block A and find the acceleration of block B. All surfaces have identical coefficients of friction. The kinetic coefficient of friction is 0.3 and the static coefficient of friction is 0.4. (36 points) Page 2 of 4 B A 30 40 P=15 lbf Additional space for problem 2 3. (a) What is in the equation = -dr / d r tan 1 ? (4 points) (b) Why is useful or important? (4 points) Page 3 of 4 4. The horizontal slider A moves with a constant velocity v = 2 m/s and has a vertical rod attached to it. The second slider B, with pin P attached, slides on the vertical rod attached to A. Pin P on slider B follows the slot defined by the equation ( 29 x sin 2 . y = . When point P is at x = 0.25 m, find the magnitude and direction of its velocity and the magnitude and direction of its acceleration. (28 points) Page 4 of 4 A B...
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This note was uploaded on 05/04/2008 for the course MIME 2300 taught by Professor Gan during the Spring '08 term at Toledo.

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t1_2007_spring_no_answers - Find the acceleration of block...

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